Package org.pushingpixels.substance.internal.utils

Source Code of org.pushingpixels.substance.internal.utils.RolloverButtonListener

/*
* Copyright (c) 2005-2010 Substance Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
*  o Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*    
*  o Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*    
*  o Neither the name of Substance Kirill Grouchnikov nor the names of
*    its contributors may be used to endorse or promote products derived
*    from this software without specific prior written permission.
*    
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.pushingpixels.substance.internal.utils;

import java.awt.MouseInfo;
import java.awt.PointerInfo;
import java.awt.event.*;
import java.security.AccessControlException;

import javax.swing.AbstractButton;
import javax.swing.plaf.basic.BasicButtonListener;

import org.pushingpixels.substance.internal.animation.StateTransitionTracker;

/**
* Button listener for rollover effects. Tracks the mouse motion and focus
* interaction for the associated button. This class is <b>for internal use
* only</b>.
*
* @author Kirill Grouchnikov
*/
public class RolloverButtonListener extends BasicButtonListener {
  /**
   * If the mouse pointer is currently inside the associated button area,
   * <code>this</code> flag is <code>true</code>.
   */
  private boolean isMouseInside;

  /**
   * The associated button.
   */
  private AbstractButton button;

  private StateTransitionTracker stateTransitionTracker;

  /**
   * Simple constructor.
   *
   * @param b
   *            The associated button.
   */
  public RolloverButtonListener(AbstractButton b,
      StateTransitionTracker stateTransitionTracker) {
    super(b);
    this.button = b;
    this.isMouseInside = false;
    this.stateTransitionTracker = stateTransitionTracker;
  }

  /*
   * (non-Javadoc)
   *
   * @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
   */
  @Override
  public void mouseEntered(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseEntered(e);
      this.isMouseInside = true;
      boolean isMouseDrag = ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) != 0);
      if (!isMouseDrag) {
        this.button.getModel().setRollover(true);
      }
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
   */
  @Override
  public void mouseExited(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseExited(e);
      this.isMouseInside = false;
      this.button.getModel().setRollover(false);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
   */
  @Override
  public void mouseReleased(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseReleased(e);
      for (ActionListener al : this.button.getActionListeners())
        if (al instanceof SubstanceInternalFrameTitlePane.ClickListener)
          return;
      this.button.getModel().setRollover(this.isMouseInside);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * javax.swing.plaf.basic.BasicButtonListener#mouseMoved(java.awt.event.
   * MouseEvent)
   */
  @Override
  public void mouseMoved(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseMoved(e);
      for (ActionListener al : this.button.getActionListeners())
        if (al instanceof SubstanceInternalFrameTitlePane.ClickListener)
          return;
      this.button.getModel().setRollover(this.isMouseInside);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see
   * javax.swing.plaf.basic.BasicButtonListener#focusGained(java.awt.event
   * .FocusEvent)
   */
  @Override
  public void focusGained(FocusEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.focusGained(e);
      if (!this.button.isShowing()) {
        // shouldn't happen. Is some lurking Swing bug
        return;
      }
      try {
        PointerInfo pi = MouseInfo.getPointerInfo();
        int px = pi.getLocation().x
            - this.button.getLocationOnScreen().x;
        int py = pi.getLocation().y
            - this.button.getLocationOnScreen().y;
        this.button.getModel()
            .setRollover(this.button.contains(px, py));
      } catch (AccessControlException ace) {
        // sandbox - give up
      }
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @seejavax.swing.plaf.basic.BasicButtonListener#focusLost(java.awt.event.
   * FocusEvent)
   */
  @Override
  public void focusLost(FocusEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.focusLost(e);
      this.button.getModel().setRollover(false);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  @Override
  public void mouseClicked(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseClicked(e);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  @Override
  public void mouseDragged(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mouseDragged(e);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }

  @Override
  public void mousePressed(MouseEvent e) {
    this.stateTransitionTracker.turnOffModelChangeTracking();
    try {
      super.mousePressed(e);
    } finally {
      this.stateTransitionTracker.onModelStateChanged();
    }
  }
}
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